Love Live! Sunshine!!

Both animes center around music and the majority of the main cast is female. The characters from each anime have obstacles to surpass in order to reach their goal, which was winning their respective competitions. And if you like a bit of shoujo ai, both have some of it. 

Shows with predominantly female casts in which the lead characters aspire to do something unusual or bold out of a desire to "shine" or stand out from the norm. 

Not only because both series are about a group of girls becoming Idols, but both Cinderella Girls and Sunshine are alternative settings in their respective Idol Franchises (iM@S and Love Live, respectively). A new beginning after the end of their main series. Also, there's more similarities between both of them: -Both series involves a special thematic: CG uses a sort of "Cinderella Analogy" in the series, while Sunshine involves the sea thematic. -Both series begins with the main character (Uzuki / Chiika) convincing her new friend (Rin / Riko) to become Idols. Also, a tomboyish girl (Mio / You) joins in. -Both series have too much similarities about their character development: Both series involves a hungry girl (Kanako / Hanamaru), a shy girl (Chieri / Ruby), a gothic "Chuunibyo" girl (Ranko / Yoshiko), a tsundere fangirl (Miku / Dia), a noisy girl (Kirari / Mari) and a leader girl (Minami / Kanan). The main difference between both is their legacy: Aqours is trying to follow μ's steps and the series constantly makes reference to this "legendary group". By the other hand, the Cinderella Project moves independently, and the series barely makes graphical reference to 765pro. read more 

These two anime is very enjoying... i said that because those anime had not much conflict in there (little much in LLS)... those anime let us flow at their activity, just like we on it too... btw, i love genre music and maybe thats the point. 

They are genderbend to each other D: Lindo Tachibana looks like Ruby Kurosawa(i guess they are Twin!!!!) Nanashiro Mage looks like Ohara Mari Tsushima Yoshiko looks like Natsumezaka Yoshiki(Fallen Angel!!) Kunikida Hanamaru looks like Sogami Urie You Watanabe looks like Kaginuki Rem ...you have to watch them both D:!! 

Both animes are about schoolgirls, who are doing music in a school club. K-On is definitively more rocking than the normal Love Live stuff. But Love Live! Sunshine!! has the concurrent idol group Saint Snow, who definitively knows how to rock. Therefore if you like K-On for the rock music or you think, Saint Snow is the better school idol group, than you schould watch the respective other show! 

The two shows take place near the beach and focus on a club of girls. The protags are very similar and meet a girl on the beach and yeah.  

Both anime are about idols and their hardships. It gets pretty angsty at times with their problems but they always got to overcome it with their own way! Both anime have a deep meaning about how failures isn't a bad thing and you can move on from it! If you liked one, you will like the other! 

Both take place at a countryside japanese town and it focus the atention in a group of female characters. 

They both have very similar flow-y animation along with the similarity of being by the ocean. Both anime's have cute bubbly characters and a strong friendship vibe. There's also a similar aura/atmosphere between both that's light heart-ed and cute. 

Both anime Go about a cute group of Idols. Both Girl are really adorable ! Both anime have a Music Gerne. Both anime have the Same kind of charachters.  

Both shows have striking similarities. They revolve around a group of girls trying to become famous as an idol group. The cutesy style is also very similar. 

Both animes are about recruiting members to make an idol club to become real idols, while someone from the student council try to sabotage the club (same background) 

They are both about highschool girls trying to be local idols.  

A young school girl gets fascinated with something (related with music) and now she wants to be like that, scouting other girls with their own dreams and reasons to be on the group on her way 

Both have the same director, both have odd and off-kilter senses of humor, both have a character who is trying way too hard to be cool, both have dramatic scenes at aquariums, both involve a giant insect that devours people whole. (The centipede in Mushiuta, Sunrise in love live)